Photo banned because model too thin

People have complained that the model used in an advert for fashion brand Gucci is too thin.

The advert was online in December last year, but now the company have been told they can't use it again unless they change it.

The company says the model was just toned and slim, but people who make the rules for adverts in the UK have decided to ban the picture.

They say the model looks unwell. People are worried it could have a bad effect on the confidence of young girls.

Watch Leah's report.